adding ctags-wropped. A wrapper for ctags adding some language (more)

language support for .php .js .nix and .as files

svn path=/nixpkgs/trunk/; revision=15476

1 files changed, 69 insertions, 0 deletions

diff --git a/pkgs/development/tools/misc/ctags/wrapped.nix b/pkgs/development/tools/misc/ctags/wrapped.nix
new file mode 100644
index 00000000000..15bf1e9810a
--- /dev/null
+++ b/pkgs/development/tools/misc/ctags/wrapped.nix
@@ -0,0 +1,69 @@
+{pkgs, ctags, writeScriptBin, lib, makeOverridable}:
+
+# define some ctags wrappers adding support for some not that common languages
+# customization:
+# a) add stuff here
+# b) override asLang, phpLang, ... using packageOverrides
+# c) use ctagsWrapped.override {args = [ your liste ];}
+
+# install using -iA ctagsWrapped.ctagsWrapped
+
+{
+
+  # the derivation. use language extensions specified by args
+  ctagsWrapped = makeOverridable ( {args, name} :  pkgs.writeScriptBin name ''
+  #!/bin/sh
+  exec ${pkgs.ctags}/bin/ctags ${lib.concatStringsSep " " (map lib.escapeShellArg args)} "$@"
+  '') {
+    args = let x = pkgs.ctagsWrapped; in lib.concatLists [
+      x.defaultArgs x.phpLang x.jsLang x.nixLang x.asLang
+    ];
+    name = "${ctags.name}-wrapped";
+  };
+
+  ### language arguments
+
+  # don't scan version control directories
+  defaultArgs = [
+    "--exclude=\.svn"
+    "--exclude=\.hg"
+    "--exclude=\.git"
+    "--exclude=\_darcs" 
+    "--sort=yes"
+  ];
+
+  # actionscript
+  asLang = [
+    "--langdef=ActionScript"  
+    "--langmap=ActionScript:.as"
+    "--regex-ActionScript=/function[ \\t]+([A-Za-z0-9_]+)[ \\t]*\\(/\1/f,function,functions/"
+    "--regex-ActionScript=/function[ \\t]+(set|get)[ \\t]+([A-Za-z0-9_]+)[ \\t]*\\(/\2/p,property,properties/"
+    "--regex-ActionScript=/interface[ \\t]+[a-z0-9_.]*([A-Z][A-Za-z0-9_]+)/\\1/i,interface,interfaces/"
+    "--regex-ActionScript=/package[ \\t]+([^ \\t]*)/\\1/p/"
+    "--regex-ActionScript=/class[ \\t]+[a-z0-9_.]*([A-Z][A-Za-z0-9_]+)/\\1/c,class,classes/"
+  ];
+
+  # PHP
+  phpLang = [
+    "--langmap=PHP:.php"
+    "--regex-PHP=/abstract class ([^ ]*)/\\1/c/"
+    "--regex-PHP=/interface ([^ ]*)/\\1/i/"
+    "--regex-PHP=/function[ \\t]+([^ (]*)/\\1/f/"
+  ];
+
+  # Javascript: also find unnamed functions and funtions beeing passed within a dict.
+  # the dict properties is used to implement duck typing in frameworks
+  # var foo = function () { ... }
+  # {
+  # a : function () {}
+  jsLang = [
+    "--regex-JavaScript=/([^ \\t]*)[ \\t]*:[ \\t]*function[ \\t]*\\(/\\1/f/"
+  ];
+
+  # find foo in "foo =", don't think we can do a lot better
+  nixLang = [
+    "--langdef=NIX"  
+    "--langmap=NIX:.nix"
+    "--regex-NIX=/\([^ \\t*]*\)[ \\t]*=/\\1/f/"
+  ];
+}